Composition for phonographic records.



No. 855.552. PATEZNTED mm 4, 1907 If. W. AYLSWORTH.

COMPOSITION FOR PHONOGEAPHI-O R APPLIOATIOH FILED KAY a1. 1906.

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UNITED STATES PATENT OFFICE.

JOYAS W. AYLSVVORTH, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO NEW JERSEY PATENT COMPANY, OF WEST ORANGE, NEW JERSEY, A CORPO- RATION ()F N EW' JERSEY.

CQMPOSITION FOR PHONOG-RAPHIC RECORDS.

Specification of Letters Patent.

Patented June 4, 1907.

Application fi ed May 31 1906. Serial No. 319,421.

welded thereto of much cheaper materlal,

having the same coeilicient of expansion so as to form a composite structure.

My present invention relates particularly to a suitable composition for the interior layer of composite phonographic records and my object is to provide a cheap tough and per manent material for this purpose.

To this end the invention consists of a composition of asphalt and stearin pitch, preferably in the pro ortion of about 80 parts by weight of asp alt and arts by wei ht of the stearin pitch. Any ard asphalt, such as Syrian asphalt or gilsonite prefera'bl melted and e materia may be. used If desired, the as halt fluid, so as to faci itate strained, although t in the crude state. may be made more its casting within the surfacing layer by the addition of from five to fifteen percent of States, residing at Composition for Phono-' stearic acid. Stearin pitch, as is wellknown, is a black tarry residue, obtained in the manufacture of stearic acid, and resembling ozocerite. The stearin pitch may be melted and added to the melted asphalt or the two ingredients may be added together in solid form in the desired porportions, and then melted and stirred until intimately associated.

Reference is hereby made to the accompanying drawing which shows a conventional record tablet with the names of the ingredients of my improved composition applied thereto.

aving now described my invention, what I claim as new and desire to secure by Letters Patent is as follows I 1. A composition for phonographic records, consisting of asphalt and stearin pitch, substantially as set forth. I 2. A composition for phonographic re'cords, consisting of asphalt and a smaller proortion of stearin pitch, substantially as set orth.

3. A composition for phonographic records, consistln'g of asphalt, stearic acid and stearin pitch, substantiallyas set forth.

his specification slgned and witnessed this 26th day of May 1906.

' JONAS.-.W. AYLSWORTH.

Witnesses:

' FRANK L. DYEB,

ANNA R. KLEHM. 

